a.[B]

1. 較低的
   He belongs to the lower middle class.

   他來自中產階級下層。

2. 低級的；下等的；下部的
   The lower berth is more convenient.

   下舖更為方便。

3. 下游的
   The lower valley of the river is often flooded.

   該河下游區域常遭洪水。

4. 南部的
   He lives in lower Manhattan.

   他住在曼哈頓南部。

vt.

1. 放下，降下；放低
   He lowered a bucket into the well to get some water.

   他將水桶放下井去取些水。

2. 減低；減弱
   We have to lower our expenses.

   我們得減少開支。

3. 貶低
   He would never lower himself by taking bribes.

   他絕不會貶低自己的身分接受賄賂的。

vi.

1. 降落；降低；減弱
   Food prices lowered during the fall.

   秋天食品價格下降了。

vi.

1. （天空等）變得陰沉
   As the sky was lowering, the mother asked her child to come home.

   當天空逐漸陰沉時，這位母親叫她的孩子回家。

2. 皺眉頭，現出愁容[（+at/on/upon）]
   They lowered at each other without saying anything.

   他倆無言以待地互皺眉頭。

adj.

1. less high in position, status, or amount.
   ▸ (often Lower) Geology  & Archaeology  denoting an older (and hence typically deeper) part of a stratigraphic or archaeological division:

   the Lower Cretaceous.
2. [in place names] situated to the south.

adv.

v.

1. cause to move downward.
2. make or become less in amount, extent, or value.
   ▸ (lower oneself) demean oneself.

v.

n.